Peter Vary created HIVE-26183: --------------------------------- Summary: Create delete writer for the UPDATE statemens Key: HIVE-26183 URL: https://issues.apache.org/jira/browse/HIVE-26183 Project: Hive Issue Type: Sub-task Reporter: Peter Vary
During the investigation of the updates of partitioned table we had the following issue: - Iceberg inserts are needed to be sorted by the new partition keys - Iceberg deletes are needed to be sorted by the old partition keys and filenames This could contradict each other. OTOH Hive updates create a single query and writes out the insert/delete record for ever row. This would mean plenty of open writers. We might want to create something like a https://github.com/apache/iceberg/blob/master/core/src/main/java/org/apache/iceberg/io/SortedPosDeleteWriter.java, but we do not want to keep the whole rows in memory. -- This message was sent by Atlassian Jira (v8.20.7#820007)